Patents by Inventor Tso Chen
Tso Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7839332Abstract: A satellite time dynamic search method and a receiver implementing such a method are disclosed. In the present invention, a predetermined period of time is sampled into multiple time samples. The time samples are sieved according to a search result of a satellite selected from candidate satellites each time. By repeatedly doing so, the finally remaining time sample will approach a true satellite system time, and accordingly the candidate satellites converge to the most possible ones as to facilitate satellite search.Type: GrantFiled: January 21, 2009Date of Patent: November 23, 2010Assignee: Mediatek Inc.Inventor: Kun-tso Chen
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Publication number: 20100254492Abstract: A data signal phase reversal correction method and system implementing the same are disclosed. In the present invention, a pilot signal of a satellite is checked to see if there is a phase reversal according to an accumulation of correction results of symbols of the received pilot signal with corresponding symbols of a known pilot sequence. It is determined whether a phase correction of a data signal of the satellite is to be executed or not by referencing the phase reversal determination result of the pilot signal.Type: ApplicationFiled: April 6, 2009Publication date: October 7, 2010Applicant: MEDIATEK INC.Inventor: Kun-tso Chen
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Patent number: 7804122Abstract: A non-volatile memory includes a substrate having two openings, a stacked gate structure disposed on the substrate between the two openings, a liner disposed on a bottom of each of the two openings and parts of a sidewall of each of the two openings, a second conductive layer disposed on the liner at the bottom of each of the two openings, and a third conductive layer on the second conductive layer and the liner. The stacked gate structure includes a first dielectric layer, a charge storage layer, a second dielectric layer, and a first conductive layer. The liner has a top surface lower than that of the substrate. The second conductive layer has a top surface co-planar with that of the liner. The third conductive layer has a top surface at least co-planar with that of the substrate and lower than that of the first dielectric layer.Type: GrantFiled: May 4, 2009Date of Patent: September 28, 2010Assignee: MACRONIX International Co., LtdInventors: Chin-Hsien Chen, Ying-Tso Chen, Chien-Hung Liu, Shou-Wei Huang
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Patent number: 7800536Abstract: A Doppler frequency searching method and correlator are disclosed. In the present invention, before Doppler frequency removal, a received signal is converted into digital form and the spreading code is removed. Then the signal is down-sampled to have a low sampling rate, which can be determined according to the maximum Doppler frequency to be searched. The Doppler frequency searching is done by stages. Each stage is in charge of a portion of the Doppler frequency to be removed. The sampling rate can be further reduced in each stage. Each stage can have a plurality of Doppler frequency removal units sharing the portion of Doppler frequency that the stage is to remove. Power consumption is reduced since Doppler frequency removal is executed with low sampling rate.Type: GrantFiled: October 11, 2007Date of Patent: September 21, 2010Assignee: MEDIATEK, Inc.Inventor: Kun-tso Chen
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Patent number: 7796084Abstract: A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.Type: GrantFiled: September 18, 2009Date of Patent: September 14, 2010Assignee: MEDIATEK Inc.Inventors: Kun-tso Chen, Kung-shuan Huang
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Publication number: 20100202499Abstract: A differential radio frequency signal transmitter is provided. The differential radio frequency signal transmitter includes an oscillator, a modulator and an amplifier module. The oscillator generates a pair of differential oscillation signals. The modulator generates a pair of differential modulated signals according to an input signal and the pair of differential oscillation signals. The input signal is a digital signal. When the input signal is at a first state, the modulator outputs the pair of differential oscillation signals as the pair of differential modulated signals, and when the input signal is at a second state, the modulator outputs a constant voltage signal as the pair of differential modulated signals. The amplifier module receives and amplifies the pair of differential modulated signals and generates a pair of differential radio frequency signals, accordingly.Type: ApplicationFiled: October 1, 2009Publication date: August 12, 2010Applicant: NATIONAL TAIWAN UNIVERSITYInventors: Jr-I Lee, Yen-Lin Huang, Yen-Tso Chen, Chia-Jung Chang
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Publication number: 20100195746Abstract: A BOC signal acquisition and tracking apparatus and method. In the present invention, at least a BOC signal, a BOC-cos signal and a PRN coded signal are generated for a received signal. Depending on application condition (e.g. acquisition mode or tracking mode), autocorrelation of the BOC signal is combined with cross-correlation of the BOC signal and one of the BOC-cos signal and the PRN coded signal to generate a proper combined correlation result.Type: ApplicationFiled: April 10, 2010Publication date: August 5, 2010Applicant: MEDIATEK Inc.Inventors: Chun-nan Chen, Kun-tso Chen, Jui-ming Wei
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Patent number: 7770189Abstract: The present invention relates to a tray used in an optical disc drive. At least two aligning means arranged in the tray for marking an aligning line at a front side and a back side of the tray, respectively. The aligning line is used for determining the dimensional accuracy of each component located on the front side and back side of the tray, respectively.Type: GrantFiled: November 16, 2004Date of Patent: August 3, 2010Assignee: Transpacific Electronics, LLCInventors: Ke Rong Lin, Hsin-Tso Chen
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Patent number: 7748011Abstract: An optical disk drive with a noise reduction function, is used to read an optical storage media. The optical disk drive includes a turntable, a housing and a clamper. The turntable supports the optical storage media. An opening is formed on the housing. The camper is positioned on the opening, where the turntable rises upwards to connect with the clamper and lower towards a down position to separate form the camper. The clamper further comprises a base portion and a resilient arm. At least one concave section, which faces the turntable, is formed on the base portion. At least one resilient arm extends from the base and has a convex portion at the end thereof. The convex portion, which also faces the turntable, is positioned between the concave section and the turntable.Type: GrantFiled: February 16, 2007Date of Patent: June 29, 2010Assignee: Pegatron CorporationInventor: Hsin-Tso Chen
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Publication number: 20100133576Abstract: A casting adapted to carry a light emitting diode die and an anti-static die is disclosed. The casting comprises two electrodes for opposite electrodes and a wall. The light emitting diode die is mounted one of electrodes and the anti-static die is mounted on the other electrode. The wall is arranged between the light emitting diode die and the anti-static die. Further, the height of the wall is larger than that of the anti-static die to shade the anti-static die, whereby reflecting the light emitted from the light emitting diode die. Therefore, the reflection ratio of the light emitting diode die is improved, and the intensity generated by the whole light emitting diode is also improved.Type: ApplicationFiled: February 9, 2010Publication date: June 3, 2010Applicant: LIGHTHOUSE TECHNOLOGY CO., LTD.Inventors: Ying-Tso Chen, Teng-Huei Huang
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Patent number: 7714347Abstract: A casting adapted to carry a light emitting diode die and an anti-static die is disclosed. The casting comprises two electrodes for opposite electrodes and a wall. The light emitting diode die is mounted one of electrodes and the anti-static die is mounted on the other electrode. The wall is arranged between the light emitting diode die and the anti-static die. Further, the height of the wall is larger than that of the anti-static die to shade the anti-static die, whereby reflecting the light emitted from the light emitting diode die. Therefore, the reflection ratio of the light emitting diode die is improved, and the intensity generated by the whole light emitting diode is also improved.Type: GrantFiled: September 12, 2006Date of Patent: May 11, 2010Assignee: Lighthouse Technology Co., Ltd.Inventors: Ying-Tso Chen, Teng-Huei Huang
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Publication number: 20100109036Abstract: A light emitting unit includes a substrate, a first reflecting element, a light-emitting diode (LED), and a second reflecting element. At least one part of the substrate is light permeable. The LED is disposed between the substrate and the first reflecting element, and the first and second reflecting elements are disposed on two opposite sides of the substrate, respectively.Type: ApplicationFiled: October 29, 2009Publication date: May 6, 2010Applicant: GIO OPTOELECTRONICS CORP.Inventors: Kuo-Tso CHEN, Tony K.T. Chen
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Patent number: 7671796Abstract: A method for searching satellites is disclosed. In the method of the present invention, the satellites are selected to consist of a group, and searching is conducted in this group. The group size is predetermined for each stage so as to be the most appropriate for various searching conditions. The member number of the group (i.e. group size) and the members of the group are updated as the searching results are continually obtained. The updates are done according to scanning times of the group, satellite hit number, searching time for the group and satellite priorities and the like, for example. The group size can be reduced or expanded. By using the method, satellites required to fix a position can be rapidly found.Type: GrantFiled: December 1, 2006Date of Patent: March 2, 2010Assignee: Mediatek Inc.Inventors: Kun-tso Chen, Kung-shuan Huang, Jan-shin Ho
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Publication number: 20100045527Abstract: A method and apparatus for collecting subframes of navigation data of satellites are disclosed. In the method of the present invention, the subframe is divided into several sub-units, each sub-units includes one or more words. When a receiver receives a subframe with a subframe ID, the respective required sub-units of the subframe are checked. A dummy sub-unit is not necessary to be considered. Valid ones of the required sub-units are collected. If not all the required sub-units of the subframe have been collected, the absent sub-units are to be collected when the next subframe with the same subframe ID is received. Some protection schemes can be applied to raise the reliability of such sub-unit collection. Especially when the signal is weak or unstable, the present invention may significantly improve the TTFF (Time To First Fix) performance of the receiver.Type: ApplicationFiled: November 3, 2009Publication date: February 25, 2010Applicant: MEDIATEK Inc.Inventors: Kuan-i Li, Kung-shuan Huang, Kun-tso Chen
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Publication number: 20100007556Abstract: A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.Type: ApplicationFiled: September 18, 2009Publication date: January 14, 2010Applicant: MEDIATEK INC.Inventors: Kun-tso Chen, Kung-shuan Huang
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Publication number: 20090315203Abstract: A continuous phase liquid and a dispersed phase liquid are permitted to flow together through a co-flow channel. Preferably, the dispersed phase liquid is arranged to flow within the flowing body of the continuous phase liquid in the co-flow channel so that the dispersed phase liquid is sheathed by the continuous phase liquid. The continuous phase and dispersed phase liquids are comminuted into microparticles in the co-flow channel by intermittently blocking the co-flow channel.Type: ApplicationFiled: August 26, 2009Publication date: December 24, 2009Applicant: National Cheng Kung UniversityInventors: Gwo-Bin Lee, Cheng-Tso Chen
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Patent number: 7636060Abstract: A method and apparatus for collecting subframes of navigation data of satellites are disclosed. In the method of the present invention, the subframe is divided into several sub-units, each sub-units includes one or more words. When a receiver receives a subframe with a subframe ID, the respective required sub-units of the subframe are checked. A dummy sub-unit is not necessary to be considered. Valid ones of the required sub-units are collected. If not all the required sub-units of the subframe have been collected, the absent sub-units are to be collected when the next subframe with the same subframe ID is received. Some protection schemes can be applied to raise the reliability of such sub-unit collection. Especially when the signal is weak or unstable, the present invention may significantly improve the TTFF (Time To First Fix) performance of the receiver.Type: GrantFiled: January 5, 2007Date of Patent: December 22, 2009Assignee: MEDIATEK Inc.Inventors: Kuan-i Li, Kung-shuan Huang, Kun-tso Chen
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Publication number: 20090309791Abstract: A sync detection device and method for a GNSS receiver. In modernized GNSS, each satellite transmits a data signal and a pilot signal. Correlations are performed between a data symbol stream converted from the data signal with possible hypotheses to find a leading edge of a frame of the data signal (i.e. frame sync detection) and between a pilot symbol stream converted from the pilot signal with possible hypotheses to find a leading edge of a code sequence of the pilot signal (i.e. pilot sync detection). The possible hypotheses for the frame sync detection are selected according to a result of pilot sync detection when pilot sync is done. Frame sync can be efficiently achieved since a range of the selected possible hypotheses is quite limited.Type: ApplicationFiled: June 13, 2008Publication date: December 17, 2009Applicant: MEDIATEK INC.Inventor: Kun-tso Chen
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Patent number: 7612714Abstract: A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.Type: GrantFiled: March 28, 2006Date of Patent: November 3, 2009Assignee: MEDIATEK Inc.Inventors: Kun-tso Chen, Kung-shuan Huang
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Patent number: 7608504Abstract: A memory is provided. The memory includes a substrate, a number of parallel bit lines, a number of parallel word lines and at least a oxide-nitride-oxide (ONO) structure. The bit lines are disposed in the substrate. The word lines are disposed on the substrate. The word lines are crossed with but not perpendicular to the bit lines. The ONO structure is disposed between the word lines and the substrate.Type: GrantFiled: August 30, 2006Date of Patent: October 27, 2009Assignee: Macronix International Co., Ltd.Inventors: Chien-Hung Liu, Shou-Wei Huang, Ying-Tso Chen, Yu-Tsung Lin